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Description: 目前普遍采用的MCS51 和PIC 系列单片机通常只有一个（或没有）UART
异步串行通信接口，在应用系统中若需要多个串行接口（例如在多机通信系
统中，主机既要和从机通信又要和终端通信）的情况下，通常的方法是扩展
一片8251 或 8250 通用同步/异步接收发送芯片（USART），需额外占用单
片机I/O 资源。本文介绍一种用单片机普通I/O 口实现串行通信的方法，可
在单片机的最小应用系统中实现与两个以上串行接口设备的多机通信
Platform: |
Size: 135627 |
Author: seattlehuang |
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Description: PIC上实现的I2C通讯源程序，使用IO口模拟I2C总线时序来实现的。-PIC achieve I2C communications source, I use IO I2C bus timing simulation to achieve.
Platform: |
Size: 3072 |
Author: 周云 |
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Description: 用picc编写的93c46读写程序，未使用spi端口，而是采用io口仿真时序。-used to prepare the reader 93c46 procedures, the use of 20 ports, but I used io timing simulation.
Platform: |
Size: 50176 |
Author: 吕江波 |
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Description: 这是适用I/O口模拟的 I2C 程序，直接适用所有Microchip PIC 系列单片机，
稍作改动即可移植到其他单片机上-This is applicable to I/O port simulation I2C procedures, directly applicable to all Microchip PIC MCU with slight modification to transplant to other single-chip on
Platform: |
Size: 3072 |
Author: zhangbinn |
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Description: FM1702SL射频芯片对外接口为SPI总线方式，对FM1702的操作实际上就是通过SPI总线
对FM1702SL内部的相关寄存器进行读写操作，从而实现射频读/写卡功能。本驱动程序基于FM2306A编写(兼容PIC指令集的其他MCU也同样试用)，通过IO口软件模拟SPI总线时序.-FM1702SL RF chip external bus interface for the SPI mode of operation of the FM1702 is actually through the SPI bus of the relevant internal FM1702SL register read and write operations, in order to achieve radio frequency read/write card. The driver is based on the preparation of FM2306A (PIC instruction set compatible with other MCU also tested), through the IO port SPI bus timing simulation software.
Platform: |
Size: 8192 |
Author: 周威 |
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Description: 目前普遍采用的MCS51 和PIC 系列单片机通常只有一个（或没有）UART
异步串行通信接口，在应用系统中若需要多个串行接口（例如在多机通信系
统中，主机既要和从机通信又要和终端通信）的情况下，通常的方法是扩展
一片8251 或 8250 通用同步/异步接收发送芯片（USART），需额外占用单
片机I/O 资源。本文介绍一种用单片机普通I/O 口实现串行通信的方法，可
在单片机的最小应用系统中实现与两个以上串行接口设备的多机通信
Platform: |
Size: 135168 |
Author: seattlehuang |
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Description: 用单片机的I/O口模拟I2C协议
I2C用IO模拟程序网上范例最多的就是51的程序了,这些范例的正确性无需怀疑.但是如果直接以它为蓝本将它"AVR化",一不留神,就会有点问题了.
这要从I2C的硬件规范和AVR及51单片机的IO口说起.I2C要求SCL,SDA二线都有 线与 功能,即I2C驱动口应该是 漏极开路 电路,其高电平的维持是靠上拉电阻来实现的, 而低电平则需要驱动口的强下拉能力.
51单片机IO口正好完全符合这个特性.写起I2C驱动颇为得心应手.但是AVR的IO口强大了,它输出的高电平是实实在在的高电平,而不是靠什么上拉电阻来提供,只有10mA都不到的电流!于是如果直接使用 PORTB_Bit0 = 1这样的操作,就不能满足I2C的线与功能了,如果此时有别的设备要将SCL或者SDA拉低,那么结果就是二个IO口打架,谁赢谁输不得而知,时间长了,多半是两败俱伤,芯片发热吧.
当然AVR的IO口自然有办法满足I2C的电气特性要求,不就是不能输出1么,那么用它的高阻状态即可(DDRB_Bit0=0,PORTB_Bit0=0即可),要输出0么(DDRB_Bit0=1,PORTB_Bit0=0).
Platform: |
Size: 1576960 |
Author: sanke |
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Description: 自己设计的pic单片机开发板源程序和说明书（内有原理图）支持pic16系列28脚和40脚器件。串口输出信息。4个LED数码管驱动；4个LED驱动；4个按键驱动；1个RS232接口；1个RS485接口；板载IIC存储器24C02驱动，；实时时钟；1Wire温度传感器；4通道功率输出驱动；2个继电器驱动；1个蜂鸣器； 2个通道AD转换（使用1个）； 红外收发（保留）； 扩展I/O接口； 按键复位电路； 板载ICSP接口。通过ICD2可在线编程，调试；复用IO均采用拨动开关控制。
-Of their own design Singlechip pic development board and a detailed description of the source program (with schematics) to support the PIC16 family of 28 feet and 40-pin devices. Serial output. 4 LED digital tube driven 4 LED driver four key drivers an RS232 interface an RS485 interface IIC onboard memory 24C02 driven real-time clock 1Wire temperature sensor 4-channel power output driver 2 relay driver a buzzer 2-channel AD converter (using an) infrared transceiver (reservations) expansion of I/O interface button reset circuit onboard ICSP interface. Available online through the ICD2 programming, debugging multiplexing IO using DIP switch control.
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Size: 2499584 |
Author: chenmao |
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Description: pic16f917操作AT24C64的源程序,通过IO口模拟实现IIC通信.-PIC16F917 operating AT24C64 source, through the IO port analog realize IIC communication.
Platform: |
Size: 2048 |
Author: 何俊钢 |
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Description: pic单片机入门指导书籍,包括io口使用,定时器等基本功能的使用.-pic Singlechip entry guide books, including the use of io mouth, timers and other basic features.
Platform: |
Size: 9455616 |
Author: songzhenguo |
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Description: pic学习编码，串行通讯，IO口控制，时钟日历软件。-Learn pic codes, serial communication, IO population control.
Platform: |
Size: 28672 |
Author: JOHN |
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Description: 此程序为一个MPLAB的工程。实现的是PIC单片机 包括串口,IIC口的应用。实现串口通信和IIC测温度，以及基本IO应用。有pic单片机的基本初始化源码。-This procedure works for a MPLAB. To achieve single-chip, including the PIC serial port, IIC Application mouth. IIC Serial communications and measuring temperature, as well as the application of the basic IO. There are basic initialization microcontroller pic source.
Platform: |
Size: 27648 |
Author: 高扬 |
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Description: PIC18F452入门C例程IO,TIMER0,CCP,INT0,RBINT,EEPROM,LCD1602,LCM12864,数码管动态显示，带有PROTUES仿真 -PIC18F452 entry C routines IO, TIMER0, CCP, INT0, RBINT, EEPROM, LCD1602, LCM12864, digital control of dynamic display, with PROTUES simulation
Platform: |
Size: 2191360 |
Author: 张双洋 |
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Description: 单片机IO口模拟I2C总线访问EEPROM，内有protues仿真文件。-Microcontroller IO port analog I2C bus access to EEPROM, there protues simulation files.
Platform: |
Size: 55296 |
Author: rxgzclb |
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Description: 该程序是PIC单片机IO口模拟uart进行通讯的,供大家参考学习-The program is simulated PIC microcontroller IO port uart to communicate, for your reference study
Platform: |
Size: 1024 |
Author: shy yin |
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Description: /RS,RW,E分别接RE0,RE1,RE2 D7-D0接RD口
#include <pic.h> /*头文件*/
#define LCD_RS RE0 /*定义引脚*/
#define LCD_RW RE1
#define LCD_E RE2
#define Busy RD7
void WR_COMM()
void DISPLY()
void CHECK_BF()
void PLAY_LCD() /*函数声明*/
void DELAY()
#define Data PORTD // 数据IO口 -/ RS, RW, E respectively, then RE0, RE1, RE2 D7-D0# include port access RD <pic.h> /* Header file* /# define LCD_RS RE0 /* define pin* /# define LCD_RW RE1# define LCD_E RE2# define Busy RD7 void WR_COMM () void DISPLY () void CHECK_BF () void PLAY_LCD () /* function declaration*/void DELAY () # define Data PORTD// data IO port
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Size: 1024 |
Author: 皇甫 |
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Description: stm32的io口比较，比较不错，适合初学者-The io I stm32 compares well, for beginners
Platform: |
Size: 33792 |
Author: DF |
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Description: THAT S THE METHOD OF i/o BY pic
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Size: 3072 |
Author: dart |
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Description: NTC负温度系数热敏电阻专业术语 零功率电阻值 RT(Ω) RT指在规定温度 T 时,采用引起电阻值变化相对于总的测量误差来说可以忽略不计的测量功率测得的电阻值。 -A newer device is available. Please consider the PIC16F887. This powerful (200 nanosecond instruction execution) yet easy-to-program (only 35 single word instructions) CMOS FLASH-based 8-bit microcontroller packs Microchip s powerful PIC® architecture into an 40- or 44-pin package and is upwards compatible with the PIC16C5X, PIC12CXXX and PIC16C7X devices. PIC16F877 features 256 bytes of EEPROM data memory, self programming, an ICD, 8 channels of 10-bit Analog-to-Digital (A/D)
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Size: 1805312 |
Author: 钟 |
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Description: PIC单片机的汇编程序，真实项目，特制主板校验台。主要内容为控制IO输入输出。-PIC microcontroller assembler, a real project, a special board calibration sets. The main contents of the control IO input and output.
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Size: 15360 |
Author: 陈杰 |
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